WO2022143088A1 - 电池箱体和电池包 - Google Patents

电池箱体和电池包 Download PDF

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Publication number
WO2022143088A1
WO2022143088A1 PCT/CN2021/136872 CN2021136872W WO2022143088A1 WO 2022143088 A1 WO2022143088 A1 WO 2022143088A1 CN 2021136872 W CN2021136872 W CN 2021136872W WO 2022143088 A1 WO2022143088 A1 WO 2022143088A1
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WO
WIPO (PCT)
Prior art keywords
mesh plate
plate
explosion
battery
exhaust device
Prior art date
Application number
PCT/CN2021/136872
Other languages
English (en)
French (fr)
Inventor
刘振岗
曹永强
刘崇威
李岩
李树会
单红艳
Original Assignee
长城汽车股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 长城汽车股份有限公司 filed Critical 长城汽车股份有限公司
Publication of WO2022143088A1 publication Critical patent/WO2022143088A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/358—External gas exhaust passages located on the battery cover or case
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the technical field of battery manufacturing, and in particular, to a battery case and a battery pack having the battery case.
  • GB38031 has clarified the relevant requirements for battery pack thermal events, that is, providing an alarm signal five minutes before danger occurs in the passenger compartment.
  • the battery pack lacks good thermal runaway safety protection, and it is difficult to slow down thermal diffusion to provide more sufficient evacuation time for passenger safety, and there is room for improvement.
  • the present application aims to solve at least one of the technical problems existing in the prior art. Therefore, one purpose of the present application is to propose a battery case. By arranging a fire exhaust component on the case, the high-temperature gas generated by the heat generated by the battery module is discharged, thereby reducing the temperature of the battery module, so as to reduce and delay the battery Thermal runaway threat to the passenger compartment.
  • a battery case includes: a case, the case has an installation cavity, the installation cavity is used for installing a battery module, and a side wall of the case is provided with a connection with the installation cavity a fire extinguishing channel; a fire exhaust assembly, the fire exhaust assembly includes a filter unit, an explosion-proof part and a directional exhaust device, the filter unit, the explosion-proof part and the directional exhaust device are integrally installed on the side wall, and The air flow in the fire extinguishing channel is adapted to be discharged through the filter unit, the explosion-proof element and the directional exhaust device in sequence.
  • a fire extinguishing channel is provided on the side wall of the case, and the high-temperature gas generated by the battery module in the installation cavity when thermal runaway is introduced into the filter unit, and the filtered high-temperature gas passes through the explosion-proof parts.
  • a directional exhaust device is introduced and the battery box is discharged, thereby lowering the temperature of the battery module and reserving more reaction time for passengers.
  • the side wall is provided with an inner installation port and an installation hole
  • the filter unit is installed in the inner installation port and communicated with the fire extinguishing channel
  • the directional exhaust device is installed in the
  • the outer side of the side wall is opposite to the filter unit (2), and the explosion-proof part is installed in the installation hole to communicate with the filter unit and the directional exhaust device.
  • the inner installation opening is open toward the installation cavity, and the side wall is provided with a blocking plate for closing the inner installation opening.
  • the filter unit includes an outer mesh plate and an inner mesh plate, the inner mesh plate is mounted on the outer mesh plate, and the outer mesh plate is The outer mesh holes of the plate are communicated with the fire extinguishing channel, the inner mesh holes of the inner mesh plate are communicated with the mounting holes, and the diameter of the outer mesh holes is larger than that of the inner mesh holes.
  • the outer mesh plate includes a side plate, a mesh plate and a connecting plate, and the side plate is arranged around the mesh plate and defines an inner installation with the mesh plate.
  • the inner mesh plate is installed in the inner installation cavity and is fixedly connected with the side plate, and the connecting plate is connected with the side wall beam where the installation hole is located.
  • the directional exhaust device is configured as a box-like structure with a hollow cavity, and the directional exhaust device is provided with an air inlet and an exhaust port communicating with the hollow cavity, so The air inlet is arranged on the side of the directional exhaust device, and the air inlet is clamped with the outer peripheral wall of the explosion-proof part, and the air outlet is arranged on the bottom surface of the directional exhaust device and opens downward.
  • the battery case according to the embodiment of the present application further includes: an exhaust guide member, the exhaust guide member is provided with a connection port, the connection port is communicated with the exhaust port, and the exhaust guide member is used for discharging The airflow exhausted by the directional exhaust is directed towards the ground.
  • the battery case according to the embodiment of the present application further includes: a foldable fireproof bag, the foldable fireproof bag is provided with a collecting port, the collecting port is communicated with the exhaust port, and the foldable fireproof bag is For collecting the airflow discharged from the directional exhaust device.
  • two sides of the directional exhaust device are provided with extended flanges, the extended flanges are provided with connecting holes, and the edges of the explosion-proof member are provided with fixing holes, and the extended flanges are provided with fixing holes.
  • the flange is adapted to be fixedly connected to the side wall through a connecting piece passing through the connecting hole and the fixing hole.
  • the present application further proposes a battery pack.
  • the battery pack according to the embodiment of the present application is provided with the battery case described in any of the above embodiments and the battery module provided in the installation cavity.
  • the battery pack and the battery box have the same advantages over the prior art, which will not be repeated here.
  • FIG. 1 is a schematic diagram of the installation of a battery box according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a battery case according to an embodiment of the present application.
  • Fig. 3 is the partial enlarged view of A place in Fig. 2;
  • Fig. 4 is a partial enlarged view at B in Fig. 2;
  • FIG. 5 is a schematic structural diagram of a filter unit in a battery case according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a directional exhaust device in a battery case according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of the installation of the exhaust guide in the battery case according to the embodiment of the present application.
  • FIG. 8 is a schematic diagram of the installation of a foldable fireproof bag in a battery box according to an embodiment of the present application.
  • Shell 1 installation cavity 11, fire exhaust port 12, inner installation port 13, installation hole 14,
  • Filter unit 2 outer mesh plate 21, side plate 211, mesh plate 212, connecting plate 213, inner mesh plate 22,
  • Explosion-proof part 3 directional exhaust device 4, air inlet 41, air outlet 42, extension flange 43, connecting hole 44,
  • Blocking plate 5 exhaust guide 6, foldable fireproof bag 7,
  • the battery module 101 The battery module 101 .
  • the battery case 100 according to the embodiment of the present application will be described below with reference to FIGS. 1 to 8 .
  • the battery box 100 of the embodiment of the present application includes: a casing 1 and a fire exhaust assembly.
  • the casing 1 has an installation cavity 11 , and the installation cavity 11 is used to install the battery modules 101 , that is, the casing 1 is constructed with an installation cavity 11 that is open upward, and a plurality of battery modules 101 are suitable for being installed from the upper end of the casing 1 . into the installation cavity 11 to form a battery pack.
  • the side wall of the casing 1 is provided with a fire extinguishing channel which communicates with the installation cavity 11 .
  • the fire extinguishing channel is symmetrically provided with a plurality of fire exhaust ports 12 on the two side walls extending along the length direction, and the fire exhaust ports 12 face
  • the installation cavity 11 of the casing 1 is open, and a plurality of fire exhaust ports 12 are arranged at intervals along the length direction and are evenly arranged at the two side walls.
  • the high-temperature gas can quickly enter the fire extinguishing channel along the plurality of fire exhaust ports 12 , thereby reducing the internal temperature of the battery module 101 to delay or reduce the heat of the battery module 101 . Diffusion, and reduce the pressure in the casing 1, so as to avoid the damage of the casing 1 and cause the high temperature gas to enter the interior of the vehicle.
  • the fire exhaust assembly is installed at the end of the casing 1, and the fire exhaust assembly is communicated with the fire extinguishing channel, and the high temperature gas enters the fire exhaust assembly from the fire extinguishing channel, and the fire exhaust assembly includes a filter Unit 2, explosion-proof parts 3 and directional exhaust device 4.
  • the filter unit 2, the explosion-proof part 3 and the directional exhaust device 4 are integrally installed on the side wall, thereby improving the integration of the parts and reducing the occupied space of the fire exhaust component, and the airflow in the fire extinguishing channel is suitable for sequentially passing through the filter unit 2, explosion-proof Parts 3 and directional exhaust 4 are discharged.
  • the filter unit 2 is used to filter the solid residue carried in the high-temperature gas, so as to prevent it from accumulating and blocking the outlet of the explosion-proof element 3, so as to ensure that the explosion-proof element 3 can be returned to its normal position.
  • the explosion-proof part 3 is configured as an explosion-proof valve, the high-temperature gas acts on the explosion-proof valve, the explosion-proof valve is opened by high pressure, and the high-temperature gas enters the directional exhaust device 4 through the explosion-proof valve to realize the final directional exhaust, wherein the directional exhaust device 4 can be configured as For the fire extinguishing box, after the air pressure in the installation cavity 11 is reduced, the explosion-proof valve is closed, and the external air cannot enter the installation cavity 11, thereby preventing the external oxygen from contacting the thermal runaway module and causing further thermal runaway.
  • the directional exhaust device 4 is used to discharge the high-temperature gas to a specific location, and cool the high-temperature gas before it enters other components, so as to reduce the impact of the high-temperature gas and combustibles discharged from the explosion-proof valve on the safety of the vehicle body.
  • the shortest path along the fire extinguishing channel between the fire outlet 12 and the explosion-proof part 3 is not less than 0.5 meters, so that the solid residues carried in the high-temperature gas, especially the large-particle solid residues, can settle in the fire extinguishing channel, thereby reducing the amount of fire.
  • the pressure of the filter unit 2 can be reduced, and the high-temperature gas can be preliminarily cooled in the fire extinguishing channel, so as to further reduce the harm of the high-temperature gas.
  • the battery module 101 when the battery module 101 is out of control, the battery module 101 generates a large amount of high-temperature gas, and the high-temperature gas carries a large amount of solid residues.
  • the fire extinguishing channel enters the fire exhaust assembly, and part of the solid residue in the high-temperature gas settles to the inner wall of the fire-extinguishing channel, the high-temperature gas passes through the filter unit 2 to filter the remaining solid residue, and the explosion-proof element 3 is pressed to open to open the installation cavity 11. Outside the channel, the high-temperature gas enters the directional exhaust device 4 along the channel, so as to be discharged to a specific location. After the discharge is completed, the explosion-proof part 3 returns to its original position to seal the installation cavity 11, effectively blocking the air backflow and increasing the oxygen concentration in the battery pack. Lower, lower combustion conditions.
  • the high-temperature gas generated by the battery module 101 in the installation cavity 11 during thermal runaway is introduced into the filter unit 2, and the filtered
  • the high-temperature gas is introduced into the directional exhaust device 4 through the explosion-proof element 3 and discharged from the battery box 100 , thereby reducing the temperature of the battery module 101 and reserving more reaction time for passengers.
  • the side wall is provided with an inner installation port 13 and an installation hole 14
  • the filter unit 2 is installed in the inner installation port 13 and communicated with the fire extinguishing channel
  • the directional exhaust device 4 is installed on the side wall.
  • the explosion-proof element 3 is installed in the mounting hole 14 to communicate with the filter unit 2 and the directional exhaust device 4 . That is to say, the high-temperature gas enters the inner installation port 13 from the fire extinguishing passage, and after being filtered by the filter unit 2, acts on the explosion-proof element 3, so that the explosion-proof element 3 is stretched at the installation hole 14 to separate the filter unit 2 and the directional exhaust.
  • the device 4 is turned on, and the high-temperature gas flows through the mounting hole 14 and enters the directional exhaust device 4, so as to be discharged to the outside of the battery pack.
  • the fire exhaust components can be divided into two groups, wherein, the battery modules 101 in the installation cavity 11 are also divided into two groups, and the two groups of battery modules 101 are respectively located in the two sides of the installation cavity 11, and The two side walls of the casing 1 are respectively provided with the explosion vent outlets corresponding to the two sets of battery modules 101, so that the thermal runaway gas and fire flows generated by the two sets of battery modules 101 can be discharged from the batteries through the two sets of fire exhaust components respectively.
  • the two groups of fire-exhaust assemblies are respectively provided with a filter unit 2, an explosion-proof element 3 and a directional exhaust device 4, and the two groups of fire-exhaust assemblies are symmetrically arranged at the ends of the casing 1, so that the two groups share the same characteristics. It is used to realize the discharge of thermal runaway gas and fire flow, thereby improving the discharge efficiency of high temperature gas to ensure the safety of the battery pack.
  • the inner installation port 13 is opened toward the installation cavity 11 , and the side wall is provided with a blocking plate 5 for closing the inner installation port 13 .
  • connecting holes 44 are provided on both sides of the inner installation port 13, and through holes corresponding to the connecting holes 44 are provided on the blocking plate 5.
  • the inner installation port 13 is closed, so as to prevent the inner installation port 13 from directly communicating with the installation cavity 11, and to prevent the high-temperature gas from directly entering the filter unit 2 without being cooled by the fire extinguishing passage. In this way, when the filter unit 2 needs to be installed or replaced, the blocking plate 5 can be removed from the inner installation port 13, which is beneficial to improve the efficiency of removal and installation.
  • the explosion-proof part 3 is installed from the outside to the outside of the side wall, and the outer side of the side wall limits the explosion-proof part 3, so that the explosion-proof part 3 is only stretched out of the installation hole 14 when it is under pressure from the inside, so that the high-temperature gas enters the directional exhaust.
  • the device 4 can be discharged to a specific location, thereby reducing the impact on the safety of the vehicle body.
  • the filter unit 2 includes an outer mesh plate 21 and an inner mesh plate 22 , the inner mesh plate 22 is installed on the outer mesh plate 21 , and the outer mesh plate 22
  • the outer mesh hole of 21 is connected with the fire extinguishing channel
  • the inner mesh hole of the inner mesh plate 22 is connected with the installation hole 14, and the aperture of the outer mesh hole is larger than that of the inner mesh hole. That is to say, the high-temperature gas enters the filter unit 2 from the fire extinguishing channel, and passes through the outer mesh plate 21 and the inner mesh plate 22 in sequence, and the high-temperature gas after filtering the solid residue is discharged to the directional exhaust device through the installation hole 14 4.
  • the diameters of the mesh holes of the outer mesh plate 21 and the inner mesh plate 22 are respectively taken as different sizes, and the area of a single opening of the outer mesh plate 21 is taken as 3mm 2 -7mm 2 , the single opening area of the inner mesh plate 22 ranges from 0.7mm 2 to 2mm 2 .
  • the large-area openings on the outer mesh plate 21 are used to filter large-particle solid residues generated when the cells are thermally out of control, and the small-area openings on the inner mesh plate 22 are used to filter small-particle solid residues.
  • the mesh plate 212 can be provided with at least two layers, for example, more layers can be provided, so that most of the solid residues and particulate matter during thermal runaway can be removed by the combined action of two or more layers of the mesh plate 212 .
  • the layered barrier is in front of the explosion-proof part 3 to ensure the normal operation of the explosion-proof part 3 .
  • the outer mesh plate 21 includes a side plate 211 , a mesh plate 212 and a connecting plate 213 , the side plate 211 is arranged around the mesh plate 212 , and the side plate 211 is connected to the mesh plate 213 .
  • 212 defines an inner installation cavity
  • the inner mesh plate 22 is installed in the inner installation cavity and is fixedly connected with the side plate 211
  • the connecting plate 213 is connected with the side wall beam where the installation hole 14 is located.
  • both sides of the inner mesh plate 22 are provided with flanging, and the outer sides of the flanging on both sides are suitable for fitting the side plates 211 of the outer mesh plate 21 respectively, so that the inner mesh plate 22 is fixed on the Inside the installation cavity.
  • the two connecting plates 213 arranged on the outer side of the side plate 211 of the outer mesh plate 21 are respectively provided with through holes, and the side plates 211 are suitable for connecting with the side wall beam where the installation hole 14 is located through the connecting piece passing through the through hole, In order to install the filter unit 2 at the inner installation port 13 .
  • the inner layer mesh plate 22 and the mesh plate 212 maintain a certain distance, so that the solid residue and particulate matter filtered by the inner layer mesh plate 22 have sufficient reserved space.
  • the side plate 211 and the connecting plate 213 are both solid plates, and the mesh plate 212 is provided with a plurality of filter holes.
  • the air flow direction is vertical, so that the gas and fire flow flows toward the mesh plate 212 under the action of the side plate 211, and enters the inner installation cavity through the filter holes of the mesh plate 212, and then passes through the inner mesh plate 22, thereby , can achieve the role of double-layer filtration.
  • the directional exhaust device 4 is configured as a box-like structure with a hollow cavity, and the directional exhaust device 4 is provided with an air inlet 41 and an air outlet 42 communicating with the hollow cavity.
  • the air port 41 is provided on the side of the directional exhaust device 4 and the air inlet 41 is clamped with the outer peripheral wall of the explosion-proof element 3 , and the exhaust port 42 is provided on the bottom surface of the directional exhaust device 4 and opens downward.
  • the high-temperature airflow discharged from the explosion-proof valve enters the directional exhaust device 4 from the intake port 41, and can be discharged from the exhaust port 42. Blowing vertically to the ground, when the high-temperature gas bounces back to the bottom of the vehicle body, its temperature will be significantly reduced, thereby reducing the impact of the high-temperature gas and combustible materials discharged from the explosion-proof part 3 on the safety of the vehicle body.
  • the battery case 100 of the embodiment of the present application further includes: an exhaust guide 6 .
  • the exhaust guide 6 is provided with a connection port, and the connection port communicates with the exhaust port 42 , and the exhaust guide 6 is used to guide the airflow discharged from the directional exhaust device 4 toward the ground. That is to say, by arranging an exhaust guide 6 to communicate with the exhaust port 42, the high-temperature gas and combustibles discharged from the battery pack during thermal runaway are directly guided and discharged to the periphery of the vehicle body, thereby preventing the high-temperature gas and combustibles from affecting the vehicle body. The impact of the parts further ensures the safety of passengers.
  • the exhaust guide 6 is an extended exhaust pipe, and the extended exhaust pipe is fixed at the lower side exhaust port 42 of the directional exhaust device 4 .
  • the battery case 100 of the embodiment of the present application further includes: a foldable fireproof bag 7 .
  • the foldable fireproof bag 7 is provided with a collecting port, and the collecting port is communicated with the exhaust port 42 , and the foldable fireproof bag 7 is used to collect the airflow discharged from the directional exhaust device 4 . That is to say, the high-temperature gas and combustibles discharged from the battery pack during thermal runaway are collected into the fireproof bag that is unfolded immediately, thereby isolating its contact with the outside air, avoiding the possibility of further combustion, and passing through the unfolded fireproof bag. The surface dissipates heat, thereby greatly reducing the harm of high temperature gases and combustibles to the body.
  • two sides of the directional exhaust device 4 are provided with extended flanges 43 , the extended flanges 43 are provided with connecting holes 44 , and the edge of the explosion-proof member 3 is provided with fixing holes, and the extended flanges 43 are provided with fixing holes.
  • the edge 43 is adapted to be fixedly connected to the side wall through the connecting piece passing through the connecting hole 44 and the fixing hole.
  • the connecting holes 44 on the two extending flanges 43 can be respectively taken as two, the fixing holes are arranged corresponding to the connecting holes, the two connecting holes 44 are arranged at intervals, and are fixedly installed with the corresponding connecting pieces respectively, so that the directional exhaust device 4 It is firmly fixed at the outer side of the side wall to prevent the directional exhaust device 4 from detaching from the side wall or generating a gap under the impact of high temperature gas, thereby improving the stability of the exhaust process.
  • the present application further proposes a battery pack.
  • the battery case 100 of any of the above-mentioned embodiments and the battery module 101 arranged in the installation cavity 11 are provided.
  • the high-temperature gas generated by the battery module 101 in the installation cavity 11 during thermal runaway is introduced into the filter unit 2, and the filtered high-temperature gas is introduced into the directional exhaust through the explosion-proof component 3. device 4, and discharge the battery box 100, thereby lowering the temperature of the battery module 101, delaying or reducing the harm caused by thermal runaway, reserving sufficient escape time for passengers, and improving the safety performance of the battery pack.
  • first feature and “second feature” may include one or more of the features.
  • a first feature being "above” or “under” a second feature may include that the first and second features are in direct contact, or that the first and second features are not in direct contact but through them Additional feature contacts between.
  • the first feature "above”, “over” and “above” the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is level higher than Second feature.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请公开了一种电池箱体和电池包，所述电池箱体包括：壳体，所述壳体具有安装腔，所述安装腔用于安装电池模组，所述壳体的侧壁内设有与所述安装腔连通的灭火通道；排火组件，所述排火组件包括过滤单元、防爆件和定向排气装置，所述过滤单元、所述防爆件和所述定向排气装置集成安装于所述侧壁，且所述灭火通道内的气流适于依次通过所述过滤单元、所述防爆件和所述定向排气装置排出。本申请实施例的电池箱体，通过在壳体的侧壁上设有灭火通道，将安装腔内的电池模组在热失控时产生的高温气体导入过滤单元，过滤后的高温气体经由防爆件导入定向排气装置，并排出电池箱体，从而降低了电池模组的温度，为乘客预留了更多的反应时间。

Description

电池箱体和电池包
本申请要求于2020年12月29日提交中国专利局、申请号为202011592720.3，申请名称为“电池箱体和电池包”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池制造技术领域，尤其是涉及一种电池箱体和具有该电池箱体的电池包。
背景技术
新能源汽车锂电池系统安全性问题日益受到关注，GB38031已明确了电池包热事件的相关要求，即在乘客舱发生危险前五分钟提供告警信号。现有技术中，电池包缺乏良好的热失控安全防护，难以减缓热扩散以为乘客安全提供更充足的疏散时间，存在改进的空间。
申请内容
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请的一个目的在于提出一种电池箱体，通过在壳体上设置排火组件，将电池模组发热产生的高温气体排出，从而降低电池模组的温度，以降低、延缓电池热失控对乘客舱的威胁。
根据本申请实施例的电池箱体，包括：壳体，所述壳体具有安装腔，所述安装腔用于安装电池模组，所述壳体的侧壁内设有与所述安装腔连通的灭火通道；排火组件，所述排火组件包括过滤单元、防爆件和定向排气装置，所述过滤单元、所述防爆件和所述定向排气装置集成安装于所述侧壁，且所述灭火通道内的气流适于依次通过所述过滤单元、所述防爆件和所述定向排气装置排出。
本申请实施例的电池箱体，通过在壳体的侧壁上设有灭火通道，将安装腔内的电池模组在热失控时产生的高温气体导入过滤单元，过滤后的高温气体经由防爆件导入定向排气装置，并排出电池箱体，从而降低了电池模组的温度，为乘客预留了更多的反应时间。
根据本申请实施例的电池箱体，所述侧壁设有内安装口和安装孔，所述过滤单元安装于所述内安装口且与所述灭火通道连通，所述定向排气装置安装于所述侧壁的外侧且与所述过滤单元(2)正对，所述防爆件安装于所述安装孔以与所述过滤单元和所述定向排气装置连通。
根据本申请实施例的电池箱体，所述内安装口朝所述安装腔内敞开，且所述侧壁设有用于封闭所述内安装口的封堵板。
根据本申请实施例的电池箱体，所述过滤单元包括外层网孔板和内层网孔板，所述内 层网孔板安装于所述外层网孔板，所述外层网孔板的外网孔与所述灭火通道连通，所述内层网孔板的内网孔与所述安装孔连通，且所述外网孔的孔径大于所述内网孔的孔径。
根据本申请实施例的电池箱体，所述外层网孔板包括侧板、网孔板和连接板，所述侧板环绕所述网孔板设置且与所述网孔板限定出内安装腔，所述内层网孔板安装于所述内安装腔内且与所述侧板固定相连，所述连接板与所述安装孔所在的侧壁梁相连。
根据本申请实施例的电池箱体，所述定向排气装置构造为具有中空腔的盒状结构，所述定向排气装置设有与所述中空腔连通的进气口和排气口，所述进气口设于所述定向排气装置的侧面且所述进气口与所述防爆件的外周壁卡接，所述排气口设于所述定向排气装置的底面且朝下敞开。
根据本申请实施例的电池箱体，还包括：排气导向件，所述排气导向件设有连接口，所述连接口与所述排气口连通，所述排气导向件用于将所述定向排气装置排出的气流朝向地面引导。
根据本申请实施例的电池箱体，还包括：折叠式防火袋，所述折叠式防火袋设有集流口，所述集流口与所述排气口连通，且所述折叠式防火袋用于收集所述定向排气装置排出的气流。
根据本申请实施例的电池箱体，所述定向排气装置的两侧设有延伸翻边，所述延伸翻边设有连接孔，且所述防爆件的边缘设有固定孔，所述延伸翻边适于通过贯穿所述连接孔、所述固定孔的连接件与所述侧壁固定相连。
本申请又提出了一种电池包。
根据本申请实施例的电池包，设置有上述任一种实施例所述的电池箱体和设于所述安装腔内的电池模组。
所述电池包和所述电池箱体相对于现有技术所具有的优势相同，在此不再赘述。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本申请实施例的电池箱体的安装示意图；
图2是根据本申请实施例的电池箱体的结构示意图；
图3是图2中A处的局部放大图；
图4是图2中B处的局部放大图；
图5是根据本申请实施例的电池箱体中过滤单元的结构示意图；
图6是根据本申请实施例的电池箱体中定向排气装置的结构示意图；
图7是根据本申请实施例的电池箱体中排气导向件的安装示意图；
图8是根据本申请实施例的电池箱体中折叠式防火袋的安装示意图。
附图标记：
电池箱体100，
壳体1，安装腔11，排火口12，内安装口13，安装孔14，
过滤单元2，外层网孔板21，侧板211，网孔板212，连接板213，内层网孔板22，
防爆件3，定向排气装置4，进气口41，排气口42，延伸翻边43，连接孔44，
封堵板5，排气导向件6，折叠式防火袋7，
电池模组101。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
下面参考图1-图8描述根据本申请实施例的电池箱体100。
如图2所示，本申请实施例的电池箱体100，包括：壳体1和排火组件。
壳体1具有安装腔11，安装腔11用于安装电池模组101，也就是说，壳体1构造有朝上敞开的安装腔11，多个电池模组101适于从壳体1上端安装至安装腔11内，以构成电池包。
如图4所示，壳体1的侧壁内设有与安装腔11连通的灭火通道，灭火通道在沿长度方向延伸设置的两侧壁上对称设置有多个排火口12，排火口12朝向壳体1安装腔11内敞开，多个排火口12沿长度方向上间隔设置且均匀布置在两侧壁处。由此，在电池模组101热失控产生大量高温气体时，高温气体可以沿多个排火口12快速进入灭火通道内，从而降低电池模组101的内部温度，以延缓或降低电池模组101热扩散，并减小壳体1内的压强，以避免壳体1损坏导致高温气体进入车辆内部。
需要说明的是，如图1和图2所示，排火组件安装于壳体1的端部，且排火组件与灭火通道连通，高温气体从灭火通道进入排火组件，排火组件包括过滤单元2、防爆件3和定向排气装置4。过滤单元2、防爆件3和定向排气装置4集成安装于侧壁，从而提高零件的集成度，降低了排火组件的占用空间，且灭火通道内的气流适于依次通过过滤单元2、防爆件3和定向排气装置4排出。
其中，过滤单元2用于将高温气体中携带的固体残渣进行过滤，从而避免其堆积、阻塞在防爆件3出口处，以保证防爆件3能够正常回位。防爆件3构造为防爆阀，高温气体作用在防爆阀上，通过高压使得防爆阀打开，高温气体通过防爆阀进入定向排气装置4实现最终的定向排气，其中定向排气装置4可构造为灭火盒，在安装腔11内的气压减小后，防爆阀关闭，外部气体无法进入安装腔11，从而避免外部氧气接触热失控模组导致进一步热失控。定向排气装置4用于将高温气体排放至特定位置，在高温气体进入其它部件前进行冷却，以降低防爆阀排出的高温气体及可燃物对车身安全的影响。
需要说明的是，排火口12与防爆件3之间沿灭火通道的最短路径不小于0.5米，以使得高温气体中携带的固体残渣，尤其是大颗粒固体残渣可以沉降在灭火通道内，从而减小过滤单元2的压力，并可使高温气体在灭火通道内初步冷却，以进一步降低高温气体的危害。
通过上述设置，当电池模组101时失控时，电池模组101产生大量高温气体，且高温气体中携带有大量固体残渣，高温气体从多个排火口12进入灭火通道内，并经由较长距离的灭火通道进入排火组件，且高温气体中的部分固体残渣沉降至灭火通道的内壁，高温气体通过过滤单元2将剩余固体残渣过滤，防爆件3受压撑开以打开安装腔11内气体向外的通道，高温气体沿通道进入定向排气装置4，从而排放至特定位置，在排放完成后，防爆件3返回原位以密封安装腔11，有效阻断空气回流，使电池包内氧气浓度降低，降低燃烧条件。
本申请实施例的电池箱体100，通过在壳体1的侧壁上设有灭火通道，将安装腔11内的电池模组101在热失控时产生的高温气体导入过滤单元2，过滤后的高温气体经由防爆件3导入定向排气装置4，并排出电池箱体100，从而降低了电池模组101的温度，为乘客预留了更多的反应时间。
在一些实施例中，如图3所示，侧壁设有内安装口13和安装孔14，过滤单元2安装于内安装口13且与灭火通道连通，定向排气装置4安装于侧壁的外侧且与过滤单元2正对，防爆件3安装于安装孔14以与过滤单元2和定向排气装置4连通。也就是说，高温气体从灭火通道进入内安装口13处，经过过滤单元2过滤后，作用在防爆件3上，使得防爆件3在安装孔14处撑开以将过滤单元2和定向排气装置4导通，高温气体流经安装孔14进入定向排气装置4，从而排放向电池包外部。
在具体的执行过程中，排火组件可以取为两组，其中，安装腔11内的电池模组101也为两组，两组电池模组101分别位于安装腔11的两侧区域内，且壳体1的两个侧壁均设有分别与两组电池模组101的排爆出口对应，以使两组电池模组101产生的热失控气火流能够分别通过两组排火组件排出电池箱体100外，两组排火组件中分别设有过滤单元2、防 爆件3和定向排气装置4，且两组排火组件为对称布置于壳体1的端部，以使二者共同用于实现热失控气火流的排放，从而提高高温气体的排放效率，以保证电池包的安全性。
在一些实施例中，如图1和图2所示，内安装口13朝安装腔11内敞开，且侧壁设有用于封闭内安装口13的封堵板5。
也就是说，在内安装口13的两侧设有连接孔44，封堵板5上设有与连接孔44对应的贯穿孔，通过连接件将封堵板5安装至侧壁上，以将内安装口13封闭，从而避免内安装口13直接与安装腔11连通，且可避免高温气体未经灭火通道降温而直接进入过滤单元2内。这样，在需要对过滤单元2进行安装或更换时，可将封堵板5从内安装口13处拆下即可，利于提高拆装效率。
防爆件3从外侧安装至侧壁的外侧，侧壁的外侧对防爆件3进行限位，使得防爆件3只在受内侧压力时撑开避让出安装孔14，使得高温气体都进入定向排气装置4以排放至特定位置，从而降低对车身安全的影响。
在一些实施例中，如图5所示，过滤单元2包括外层网孔板21和内层网孔板22，内层网孔板22安装于外层网孔板21，外层网孔板21的外网孔与灭火通道连通，内层网孔板22的内网孔与安装孔14连通，且外网孔的孔径大于内网孔的孔径。也就是说，高温气体从灭火通道中进入过滤单元2，并依次通过外层网孔板21和内层网孔板22后，过滤固体残渣后的高温气体通过安装孔14排放至定向排气装置4。
需要说明的是，如图5所示，外层网孔板21和内层网孔板22上网孔的直径分别取为不同大小，外层网孔板21的单个开孔面积范围取为3mm 2-7mm 2，内层网孔板22的单个开孔面积范围是0.7mm 2-2mm 2。外层网孔板21上大面积的开孔用于过滤电芯热失控时产生的大颗粒固体残渣，内层网孔板22上小面积的开孔用于过滤小颗粒物固体残渣。可以理解的是，网孔板212可设置为至少两层，如可设置更多层，以通过两层或更多层网孔板212组合作用，可以将热失控时的大部分固体残渣和颗粒物分层阻隔在防爆件3前，以保证防爆件3的正常工作。
在一些实施例中，如图5所示，外层网孔板21包括侧板211、网孔板212和连接板213，侧板211环绕网孔板212设置，且侧板211与网孔板212限定出内安装腔，内层网孔板22安装于内安装腔内且与侧板211固定相连，连接板213与安装孔14所在的侧壁梁相连。
其中，内层网孔板22的两侧设有翻边，两侧翻边的外侧面适于分别贴合向外层网孔板21的侧板211，以使得内层网孔板22固定在内安装腔处。且设置在外层网孔板21的侧板211外侧的两个连接板213上分别设有通孔，侧板211适于通过贯穿通孔的连接件与安装孔14所在的侧壁梁相连接，以将过滤单元2安装在内安装口13处。
需要说明的是，内层网孔板22与网孔板212保持一定间距，使得内层网孔板22所过 滤的固体残渣和颗粒物具有足够的预留空间。其中，侧板211和连接板213均为实心板，网孔板212设有多个过滤孔，在将过滤单元2安装于安装孔14所在的侧壁梁之后，侧板211与灭火通道内的气流方向垂直，以使气火流在侧板211的作用下朝向网孔板212流动，并经过网孔板212的过滤孔进入到内安装腔中，在通过内层网孔板22，由此，可实现双层过滤的作用。
在一些实施例中，如图6所示，定向排气装置4构造为具有中空腔的盒状结构，定向排气装置4设有与中空腔连通的进气口41和排气口42，进气口41设于定向排气装置4的侧面且进气口41与防爆件3的外周壁卡接，排气口42设于定向排气装置4的底面且朝下敞开。
也就是说，通过将高温气体的排气方向从水平转为向下，当出现热失控时，防爆阀排出的高温气流从进气口41进入定向排气装置4后，能够从排气口42垂直吹向地面，当高温气体反弹回车身底部，其温度将明显降低，从而降低防爆件3排出的高温气体及可燃物对车身安全的影响。
在一些实施例中，如图7所示，本申请实施例的电池箱体100，还包括：排气导向件6。排气导向件6设有连接口，连接口与排气口42连通，排气导向件6用于将定向排气装置4排出的气流朝向地面引导。也就是说，通过设置一个排气导向件6与排气口42连通，将热失控时从电池包内排出的高温气体和可燃物直接引导排出至车身外围，从而避免高温气体和可燃物对车身零件的影响，进一步保证了乘客的安全。其中，如图7所示，排气导向件6为一根延长排气管，延长排气管固定在定向排气装置4的下侧排气口42处。
在一些实施例中，如图8所示，本申请实施例的电池箱体100，还包括：折叠式防火袋7。折叠式防火袋7设有集流口，集流口与排气口42连通，且折叠式防火袋7用于收集定向排气装置4排出的气流。也就是说，热失控时从电池包内排出的高温气体和可燃物收集至随即展开的防火袋中，从而隔绝其与外部空气的接触，避免了进一步燃烧的可能，且通过展开的防火袋外表面进行散热，从而大大降低了高温气体和可燃物对车身的危害。
在一些实施例中，如图6所示，定向排气装置4的两侧设有延伸翻边43，延伸翻边43设有连接孔44，且防爆件3的边缘设有固定孔，延伸翻边43适于通过贯穿连接孔44、固定孔的连接件与侧壁固定相连。两个延伸翻边43上的连接孔44可以分别取为两个，固定孔对应连接孔设置，两个连接孔44间隔设置，并分别与对应的连接件固定安装，从而将定向排气装置4牢牢固定在侧壁的外侧处，避免定向排气装置4在高温气体的冲击下脱离侧壁或是产生间隙，从而提高了排气过程的稳定性。
本申请又提出了一种电池包。
根据本申请实施例的电池包，设置有上述任一种实施例的电池箱体100和设于安装腔 11内的电池模组101。通过在壳体1的侧壁上设有灭火通道，将安装腔11内的电池模组101在热失控时产生的高温气体导入过滤单元2，过滤后的高温气体经由防爆件3导入定向排气装置4，并排出电池箱体100，从而降低了电池模组101的温度，并延缓或降低热失控带来的危害，为乘客预留足够的逃生时间，提高电池包的安全性能。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
在本申请的描述中，“第一特征”、“第二特征”可以包括一个或者更多个该特征。
在本申请的描述中，“多个”的含义是两个或两个以上。
在本申请的描述中，第一特征在第二特征“之上”或“之下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。
在本申请的描述中，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (15)

  1. 一种电池箱体(100)，其特征在于，包括：
    壳体(1)，所述壳体(1)具有安装腔(11)，所述安装腔(11)用于安装电池模组(101)，所述壳体(1)的侧壁内设有与所述安装腔(11)连通的灭火通道；
    排火组件，所述排火组件包括过滤单元(2)、防爆件(3)和定向排气装置(4)，所述过滤单元(2)、所述防爆件(3)和所述定向排气装置(4)集成安装于所述侧壁，且所述灭火通道内的气流适于依次通过所述过滤单元(2)、所述防爆件(3)和所述定向排气装置(4)排出。
  2. 根据权利要求1所述的电池箱体(100)，其特征在于，所述侧壁设有内安装口(13)和安装孔(14)，所述过滤单元(2)安装于所述内安装口(13)且与所述灭火通道连通，所述定向排气装置(4)安装于所述侧壁的外侧且与所述过滤单元(2)正对，所述防爆件(3)安装于所述安装孔(14)以与所述过滤单元(2)和所述定向排气装置(4)连通。
  3. 根据权利要求2所述的电池箱体(100)，其特征在于，所述内安装口(13)朝所述安装腔(11)内敞开，且所述侧壁设有用于封闭所述内安装口(13)的封堵板(5)。
  4. 根据权利要求2或3所述的电池箱体(100)，其特征在于，所述过滤单元(2)包括外层网孔板(21)和内层网孔板(22)，所述内层网孔板(22)安装于所述外层网孔板(21)，所述外层网孔板(21)的外网孔与所述灭火通道连通，所述内层网孔板(22)的内网孔与所述安装孔(14)连通，且所述外网孔的孔径大于所述内网孔的孔径。
  5. 根据权利要求4所述的电池箱体(100)，其特征在于，所述外层网孔板(21)包括侧板(211)、网孔板(212)和连接板(213)，所述侧板(211)环绕所述网孔板(212)设置且与所述网孔板(212)限定出内安装腔，所述内层网孔板(22)安装于所述内安装腔内且与所述侧板(211)固定相连，所述连接板(213)与所述安装孔(14)所在的侧壁梁相连。
  6. 根据权利要求4-5中任一项所述的电池箱体(100)，其特征在于，所述外层网孔板(21)和所述内层网孔板(22)上网孔的直径不同，所述外层网孔板(21)的单个开孔面积大于所述内层网孔板(22)的单个开孔面积。
  7. 根据权利要求5所述的电池箱体(100)，其特征在于，所述内层网孔板(22)的两侧均设有翻边，两侧所述翻边的外侧面适于分别贴合向所述外层网孔板(21)的所述侧板(211)。
  8. 根据权利要求5所述的电池箱体(100)，其特征在于，所述侧板(211)和所述连接板(213)均为实心板，所述网孔板(212)设有多个过滤孔。
  9. 根据权利要求2-5中任一项所述的电池箱体(100)，其特征在于，所述定向排气装置(4)构造为具有中空腔的盒状结构，所述定向排气装置(4)设有与所述中空腔连通的进气 口(41)和排气口(42)，所述进气口(41)设于所述定向排气装置(4)的侧面且所述进气口(41)与所述防爆件(3)的外周壁卡接，所述排气口(42)设于所述定向排气装置(4)的底面且朝下敞开。
  10. 根据权利要求9所述的电池箱体(100)，其特征在于，还包括：排气导向件(6)，所述排气导向件(6)设有连接口，所述连接口与所述排气口(42)连通，所述排气导向件(6)用于将所述定向排气装置(4)排出的气流朝向地面引导。
  11. 根据权利要求9-10中任一项所述的电池箱体(100)，其特征在于，还包括：折叠式防火袋(7)，所述折叠式防火袋(7)设有集流口，所述集流口与所述排气口(42)连通，且所述折叠式防火袋(7)用于收集所述定向排气装置(4)排出的气流。
  12. 根据权利要求9-11中任一项所述的电池箱体(100)，其特征在于，所述定向排气装置(4)的两侧设有延伸翻边(43)，所述延伸翻边(43)设有连接孔(44)，且所述防爆件(3)的边缘设有固定孔，所述延伸翻边(43)适于通过贯穿所述连接孔(44)、所述固定孔的连接件与所述侧壁固定相连。
  13. 一种电池包，其特征在于，包括权利要求1-12中任一项所述的电池箱体(100)和设于所述安装腔(11)内的电池模组(101)。
  14. 根据权利要求1-13中任一项所述的电池箱体(100)，其特征在于，所述灭火通道在沿长度方向延伸设置的两侧壁上对称设置有多个排火口(12)，所述排火口(12)朝向壳体(1)安装腔(11)内敞开，多个排火口(12)沿长度方向上间隔设置且均匀布置在两侧壁处。
  15. 根据权利要求1-14中任一项所述的电池箱体(100)，其特征在于，所述排火口(12)与所述防爆件(3)之间沿所述灭火通道的最短路径不小于0.5米。
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